| 摘要 |
PURPOSE:To obtain a sharp pattern without noise at all times by using a fixed head at normal reproduction and using a moving head at special reproduction. CONSTITUTION:Rotary transformers 4a, 4b and rotary transformers 5a, 5b fitted to a fixed cylinder 2 and a rotary cylinder 1 are provided and a clad type drive element 9 made of a piezoelectric porcelain plate or the combination of piezoelectric porcelain plate and a metallic plate on which special reproduction magnetic heads 13a, 13b are mounted is fitted to the rotary cylinder 1 as low or high speed reproduction of forward/reverse and still picture. Signal input/output among fixed heads 17a, 17b for video signal, moving heads 13a, 13b and heads 15a, 15b for FM sound signal are conducted by using the rotary transformers 4a, 4b and 5a, 5b. Then the voltage supply to the drive element 9 is conducted via slip rings by using brushes. |
